Class: Cyrel::AST::OptimizedCache

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/cyrel/ast/optimized_nodes.rb

Overview

Optimized cache that takes advantage of Data’s hash/==

Instance Method Summary collapse

Constructor Details

#initialize ⇒ OptimizedCache

Returns a new instance of OptimizedCache.



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# File 'lib/cyrel/ast/optimized_nodes.rb', line 42

def initialize
  @cache = {}
  @max_size = 1000
  @mutex = Mutex.new
end

Instance Method Details

#fetch(node) ⇒ Object 



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# File 'lib/cyrel/ast/optimized_nodes.rb', line 48

def fetch(node)
  # Data objects have reliable hash/== so we can use them directly as keys
  @mutex.synchronize do
    if @cache.key?(node)
      @cache[node]
    else
      value = yield
      store(node, value)
      value
    end
  end
end